Avalanche diode oscillator
阅读：398发布：2022-09-13
专利汇可以提供Avalanche diode oscillator专利检索，专利查询，专利分析的服务。并且A circuit for the operation of an avalanche diode in the TRAPATT mode including a resonator resonant at an integral multiple of the TRAPATT frequency of operation and being provided with a predetermined capacitance. The predetermined capacitance is charged from a high impedance current source to a voltage which produces TRAPATT oscillations of current in the diode. The oscillations of current of TRAPATT or fundamental frequency excite the resonator to provide oscillations at the resonant frequency of the resonator thereof which are additively superimposed on the voltage of TRAPATT frequency developed on the capacitor from the high impedance source.，下面是Avalanche diode oscillator专利的具体信息内容。
1. In combination, an electromagnetic resonator including a first conductive member having a first surface and a second conductive member having a second surface in opposed relationship to said first surface, said resonator being resonant at a first predetermined frequency, said first conductive member being of a size and spaced in relationship to said second conductive member to provide a predetermined capacitance, an avalanche diode comprising a body of semiconductor material including a pair of electrodes secured thereto and an intermediate region of relatively moderate conductivity included therein, one of said electrodes connected to said first conductive member and the other of said electrodes connected to said second conductive member in the low fieldhigh current region of said resonator, a source of charging current connected in circuit with said predetermined capacitance to charge said predetermined capacitance to a voltage at which said intermediate region is depleted of majority carriers and exceeds the voltage at which substantial avalanche multiplication of conduction carriers occurs in said intermediate region, said current source being constituted to provide current flow to said predetermined capacitance which causes the voltage across said predetermined capaictance to continue to rise after initiation of substantial avalanche multiplication in said diode to a value at which an avalanche shock front occurs in and traverses said intermediate region to generate an electronhole plasma therein, said predetermined capacitance having a value in relation to the voltage at which substantial avalanche multiplication occurs in said diode to hold sufficient charge therein to supply said intermediate region with charge to fill said intermediate region with plasma charge, said current source, said predetermined capacitance and said diode being constituted so that charge flow into said diode during plasma generation substantially exceeds the charge flow into said predetermined capacitance from said source whereby the voltage on said predetermined capacitance is substantially reduced and avlanching of carriers and plasma generation is extinguished in said intermediate region of said diode, said reduced voltage on said predetermined capacitance sweeping plasma charge from the intermediate region of said diode and allowing said predetermined capacitance to be charged again to a value of voltage above the voltage at which substantial avalanche multiplication occurs to initiate another cycle of operation, means for setting the rate of charging of said capacitance from said source to preset the frequency of said cycle of operation of a submultiple of said predetermined frequency of said resonator whereby a harmonic component of the pulses of current flowing in said diode due to said cycle of operation excites said resonator to provide a voltage of said predetermined frequency across said capacitance in additive relationship to the voltage produced thereacross by said charging source, means coupled to said resonator for deriving an output.
2. The combination of claim 1 in which said diode comprises a body of semiconductor material including an end region of one conductivity type and relatively high conductivity, an intermediate region of opposite conductivity type and of relatively moderate conductivity, and another end region of said opposite conductivity type and relatively high conductivity, one of said electrodes connected to one of said end regions and the other of said electrodes connected to the other of said end regions.
3. The combination of claim 1 in which said first surface and said second surface are substantially parallel.
4. The combination of claim 1 in which said resonator is a radial cavity bounded by said first conductive member and said second coNductive member.
5. The combination of claim 4 in which said first conductive member includes a generally cylindrical side portion and in which said second conductive member includes a generally cylindrical surface surrounding said side portion and coaxial therewith.
6. The combination of claim 1 in which said output means includes another resonator resonant at said frequency of operation.
7. The combination of claim 5 in which said output means includes a plate closely spaced to said first conductive member.
8. The combination of claim 7 in which said plate comprises a conductive cylindrical member substantially more closely spaced to the cylindrical side portion of said first conductive member than to the cylindrical surface of said second conductor member.
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